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https://www.readbyqxmd.com/read/29054952/re-correction-osteotomy-with-osteophyte-graft-for-correction-loss-with-non-union-after-high-tibial-osteotomy
#1
Ryuichi Nakamura, Hitoshi Nishimura, Yasuo Katsuki
A 68-year-old man with right knee varus osteoarthritis was treated by lateral closed-wedge high tibial osteotomy. A correction loss with non-union occurred 6 months after surgery and a re-correction osteotomy was performed. Removing the proximal screws of the lateral plate, a medial opening-wedge re-osteotomy was performed. Arthroscopically harvested osteophytes were used to fill the gap after opening. An additional medial locking plate was installed on the medial side. Finally, the proximal lateral screws were reinserted and locked again...
October 19, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29053925/mesenchymal-stem-cell-secretome-improves-tendon-cell-viability-in-vitro-and-tendon-bone-healing-in-vivo-when-a-tissue-engineering-strategy-is-used-in-a-rat-model-of-chronic-massive-rotator-cuff-tear
#2
Nuno Sevivas, Fábio Gabriel Teixeira, Raquel Portugal, Bruno Direito-Santos, João Espregueira-Mendes, Filipe J Oliveira, Rui F Silva, Nuno Sousa, Wan Ting Sow, Nguyen Luong, Kee Woei Ng, António J Salgado
BACKGROUND: Massive rotator cuff tears (MRCTs) represent a major clinical concern, especially when degeneration and chronicity are involved, which highly compromise healing capacity. PURPOSE: To study the effect of the secretome of mesenchymal stem cells (MSCs) on tendon cells (TCs) followed by the combination of these activated TCs with an electrospun keratin-based scaffold to develop a tissue engineering strategy to improve tendon-bone interface (TBi) healing in a chronic MRCT rat model...
October 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29052357/critical-sized-full-thickness-skin-defect-regeneration-using-ovine-small-intestinal-submucosa-with-or-without-mesenchymal-stem-cells-in-rat-model
#3
Morteza Rashtbar, Jamshid Hadjati, Jafar Ai, Sadegh Shirian, Issa Jahanzad, Mahmoud Azami, Shiva Asadpuor, Esmaeil Sadroddiny
Decellularized extracellular matrices (ECM) based materials are routinely used for a variety of clinical applications. Hereof, in vivo application of decellularized ovine small intestinal submucosal (DOSIS) layer as, a scaffold is yet to be investigated. In this study, the effectiveness of the DOSIS scaffold, with or without rat bone marrow mesenchymal stem cells (BM-MSCs), in full-thickness wound healing of critical-sized defect was experimentally studied in a rat model. The experimental groups included; group I (control), group II (DOSIS), and group III (BM-MSCs-seeded DOSIS)...
October 20, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29052173/regulation-of-osteoblast-differentiation-and-iron-content-in-mc3t3-e1-cells-by-static-magnetic-field-with-different-intensities
#4
Jiancheng Yang, Jian Zhang, Chong Ding, Dandan Dong, Peng Shang
Many studies have indicated that static magnetic fields (SMFs) have positive effects on bone tissue, including bone formation and bone healing process. Evaluating the effects of SMFs on bone cell (especially osteoblast) function and exploring the mechanism, which is critical for understanding the possible risks or benefits from SMFs to the balance of bone remodeling. Iron and magnetic fields have the natural relationship, and iron is an essential element for normal bone metabolism. Iron overload or deficiency can cause severe bone disorders including osteoporosis...
October 19, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/29052035/why-a-surgically-treated-humeral-shaft-fracture-became-a-nonunion-review-of-11%C3%A2-years-in-two-trauma-centers
#5
A Maresca, P Sangiovanni, S Cerbasi, R Politano, R Fantasia, M Commessatti, R Pascarella
AIM: The aim of this study was to evaluate nonunion causes of surgically treated humeral shaft fractures in two different trauma centers. METHODS: A total of 327 cases of humeral shaft fractures were treated in 11 years in two trauma centers. We retrospectively reviewed in detail some factors in order to understand the reasons for nonunion: (1) fracture type, according to the AO classification, (2) grade of open fracture, according to Gustilo-Anderson, (3) timing, (4) reduction and (5) fixation...
October 19, 2017: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/29051537/microarray-gene-expression-of-periosteum-in-spontaneous-bone-regeneration-of-mandibular-segmental-defects
#6
Zheyi Li, Juli Pan, Jinling Ma, Zhen Zhang, Yuxing Bai
Spontaneous bone regeneration could occur to reestablish mandibular bony continuity in patients who underwent partial or total mandibulectomy for tumors with periosteum-preserving. However, scarce data is available related to the precise role of periosteum in this bone regeneration. Therefore we aimed to investigate the gene expression of periosteum that were involved in the mandibular bone regeneration. Mandibular segmental defects were created in six mini-pigs with periosteum preserved. The periosteum of defects and control site were harvested at 1 and 2 weeks...
October 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29047220/the-cytokines-and-microenvironment-of-fracture-haematoma-current-evidence
#7
REVIEW
Gavin Walters, Ippokratis Pountos, Peter V Giannoudis
BACKGROUND: Fracture haematoma formation is the first and foremost important stage of fracture healing. It orchestrates the inflammatory and cellular processes leading to the formation of callus and the restoration of the continuity of the bone. Evidence suggests that blocking this initial stage could lead to an impairment of the overall bone healing process. This review aims to analyse the existing evidence of molecular contributions to bone healing within fracture haematoma, and to determine the potential to modify the molecular response to fracture in the haematoma with the aim of improving union times...
October 19, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29046162/potential-role-of-rebamipide-in-osteoclast-differentiation-and-mandibular-condylar-cartilage-homeostasis
#8
Takashi Izawa, Islamy Rahma Hutami, Eiji Tanaka
Temporomandibular joint osteoarthritis (TMJ-OA) is a degenerative disease that involves changes in subchondral bone and progressive degradation of cartilage. Currently, rebamipide, a gastroprotective drug, is administered to protect gastric mucosa and accelerate ulcer healing. Recent studies have shown that rebamipide also attenuates cartilage degeneration by suppressing oxidative damage and inducing homeostasis of the extracellular matrix of articular chondrocytes. Regarding the latter, reduced expression of cathepsin K, NFATc1, c-Src, and integrin β3, and increased expression of nuclear factor-kappa B, have been found to be mediated by the transcription factor, receptor activator of nuclear factor kappa-B ligand (RANKL)...
October 17, 2017: Current Rheumatology Reviews
https://www.readbyqxmd.com/read/29045968/-comparative-results-of-non-operative-and-operative-treatment-of-humeral-shaft-fractures
#9
B S Zhang, W Y Li, X H Liu, J Wei, L He, M Y Wang
OBJECTIVE: To compare the difference between non-operative and operative treatment of humeral shaft fractures. METHODS: From March 2005 to October 2012, 252 cases of humeral shaft fractures were treated and were adequately followed up. According to the treatment methods, the patients were divided into 2 groups: the non-operative group and the operative group. In the non-operative group, there were 76 cases treated with plaster/small splint fixation,meanwhile there were 176 cases treated with internal fixation either by plating or by nailing in the operative group...
October 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/29045803/chitosan-based-trilayer-scaffold-for-multitissue-periodontal-regeneration
#10
E M Varoni, S Vijayakumar, E Canciani, A Cochis, L De Nardo, G Lodi, L Rimondini, M Cerruti
Periodontal regeneration is still a challenge for periodontists and tissue engineers, as it requires the simultaneous restoration of different tissues-namely, cementum, gingiva, bone, and periodontal ligament (PDL). Here, we synthetized a chitosan (CH)-based trilayer porous scaffold to achieve periodontal regeneration driven by multitissue simultaneous healing. We produced 2 porous compartments for bone and gingiva regeneration by cross-linking with genipin either medium molecular weight (MMW) or low molecular weight (LMW) CH and freeze-drying the resulting scaffolds...
October 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/29044525/susceptibility-of-different-mouse-strains-to-peri-implantitis
#11
S Hiyari, A Naghibi, R Wong, R Sadreshkevary, L Yi-Ling, S Tetradis, P M Camargo, F Q Pirih
BACKGROUND AND OBJECTIVE: Peri-implantitis (PI) is an inflammatory condition that affects the tissues surrounding dental implants. Although the pathogenesis of PI is not fully understood, evidence suggests that the etiology is multifactorial and may include a genetic component. The aim of this study was to investigate the role of genetics in the development of peri-implantitis. MATERIAL AND METHODS: Four-week-old C57BL/6J, C3H/HeJ and A/J male mice had their left maxillary molars extracted...
October 17, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29043444/combined-treatment-with-alendronate-and-drynaria-rhizome-extracts-effect-on-fracture-healing-in-osteoporotic-rats
#12
Long Chen, Zhou-Shan Tao, Hui Chen, Kailiang Zhou, Dong-Sheng Zhou
The effects of both alendronate (ALN) and Drynaria rhizome extracts (DRE) alone could promote bone healing in osteoporotic fractures but there are no reports about the combined use of ALN and DRE for promotion of bone healing of fractures in osteoporotic settings. This study investigated the effects of ALN plus DRE on fractures in osteopenic rats. Osteopenic rats underwent unilateral transverse osteotomy on the femur fixed by a sterilized Kirschner wire 2 weeks after intragastric administration of retinoic acid (80 mg/kg body weight/day)...
October 17, 2017: Zeitschrift Für Gerontologie und Geriatrie
https://www.readbyqxmd.com/read/29043245/intentional-partial-odontectomy-a-long-term-follow-up-study
#13
Hyun-Suk Kim, Pil-Young Yun, Young-Kyun Kim
BACKGROUND: The surgical extraction of the third molar is the most frequently encountered procedure in oral and maxillofacial surgery and is related with a variety of complications. This study examined the efficacy of intentional partial odontectomy (IPO) in the third molars which have no periapical lesions and are located near important anatomical structures such as inferior alveolar nerve. METHODS: Seven patients (four males, three females, 39.1 ± 11.6 years), who received IPO to reduce the risk of inferior alveolar nerve injury (IANI), were followed long-term...
December 2017: Maxillofacial Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29042744/palatal-perforation-a-rare-complication-of-postanesthetic-necrosis
#14
Vidisha Gargi, Ravi Prakash Sasankoti Mohan, Nagaraju Kamarthi, Swati Gupta
The everyday practice of dentistry relies heavily on achieving adequate local anesthesia. Even though the safety record of local anesthetic agents is high, complications do occur. Palate is a favorable site for soft-tissue lesions. Various factors such as direct effects of the drug, blanching of the tissues during injection, relatively poor blood supply, and reactivation of the latent forms of herpes can all promote to tissue ischemia and a lesion in the palate. Among various complications, anesthetic necrotic ulcer is a rare and uncommon condition occurring mostly in the hard palate possibly after a local anesthetic infiltration...
July 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29042719/a-novel-conservative-approach-combining-sealbio-and-surgical-fenestration-for-healing-of-large-periapical-cystic-lesions-of-endodontic-origin-a-pilot-study
#15
Naseem Shah
OBJECTIVES: To evaluate the treatment outcome of large periapical cystic lesions treated by combining two novel, conservative approaches, "SealBio" and "Surgical Fenestration". MATERIALS AND METHODS: Five cases (4M:1F, age range 14-38 years, mean age 24.5 years) of large periapical cystic lesions, diagnosed on clinical and radiographic examination, were included in the study. After informed consent, endodontic treatment was initiated; chemo-mechanical preparation and intra-canal dressing of calcium hydroxide was given...
July 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29042034/evaluation-of-mandibular-fracture-healing-in-rats-under-zoledronate-therapy-a-histologic-study
#16
Mohammad Zandi, Arash Dehghan, Payam Amini, Leila Rezaeian, Shideh Doulati
INTRODUCTION: To evaluate fracture healing in mandible of rats under zoledronate therapy. METHODS: A total of 135 Wistar rats were randomly allocated into 3 groups. Group L received two intravenous infusion of 0.06 mg/kg zoledronate 6 weeks apart. Group H received the same dose of zoledronate as group L once a week for 6 weeks and group C were treated with normal saline. Seven days after the last infusion, rats underwent unilateral mandibular osteotomy to replicate a fracture...
October 14, 2017: Injury
https://www.readbyqxmd.com/read/29039630/impairment-of-the-chondrogenic-phase-of-endochondral-ossification-in-vivo-by-inhibition-of-cyclooxygenase-2
#17
M P Janssen, M M Caron, B van Rietbergen, D A Surtel, L W van Rhijn, T J Welting, P J Emans
Many studies have reported on the effects of cyclooxygenase-2 (COX-2) inhibition on osteogenesis. However, far less is known about the effects of COX-2 inhibition on chondrogenic differentiation. Previous studies conducted by our group show that COX-2 inhibition influences in vitro chondrogenic differentiation. Importantly, this might have consequences on endochondral ossification processes occurring in vivo, such as bone fracture healing, growth plate development and ectopic generation of cartilage. The goal of our study was to investigate, in vivo, the effect of COX-2 inhibition by celecoxib on the cartilaginous phase of three different endochondral ossification scenarios...
October 17, 2017: European Cells & Materials
https://www.readbyqxmd.com/read/29039128/distal-femoral-flexion-deformity-from-growth-disturbance-treated-with-a-two-level-osteotomy-and-internal-lengthening-nail
#18
Austin T Fragomen, Fiona R Fragomen
Salter Harris fractures of the distal femur can lead to growth disturbance with resulting leg length inequality and knee deformity. We have looked at a case series (3) of patients who presented with a distal femur flexion malunion and shortening treated with a distal femoral osteotomy and plating and a proximal femoral osteotomy with a magnetic internal lengthening nail. Does a two-level osteotomy and internal fixation approach provide a reliable result both radiographically and functionally? The average knee extension loss was 12°, LLD 47 mm, PDFA 65°, MAD 2 mm...
October 16, 2017: Strategies in Trauma and Limb Reconstruction
https://www.readbyqxmd.com/read/29038740/reverse-fosbury-flop-tear-of-the-rotator-cuff
#19
Jérôme Tirefort, Gregory Cunningham, Alexandre Lädermann
INTRODUCTION: "Fosbury flop" tear is an avulsion of the posterosuperior rotator cuff from the bone with reversal healing on its medial bursal-side. This case report describes a unique variant of Fosbury flop tear with a lesion of the musculotendinous junction that healed, for its tendon part, on the anterior humerus and coracoid process. CASE PRESENTATION: A 62-year-old man developed a posttraumatic painful shoulder with active loss of range of motion. Magnetic resonance arthrography demonstrated a lesion of the musculotendinous junction of the supraspinatus with healing of the tendon on the above-mentioned structures (reverse Fosbury flop)...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/29037925/radiographic-union-scoring-scale-for-determining-consolidation-rates-in-the-calcaneus
#20
Michael L Sganga, N Jake Summers, Brandon Barrett, Michael Matthews, Timothy Karthas, Lindsay Johnson, Jeremy J Cook, Philip Basile, Emily A Cook
The reliable evaluation of osseous consolidation after hindfoot osteotomy can be difficult. Concomitant hindfoot osteotomies often dictate the advancement of weightbearing, and radiographs are the mainstay imaging tool owing to cost, efficiency, and radiation exposure. Understanding the radiographic parameters that can be used to reliably determine osseous healing is paramount. However, currently, no reliable or validated method is available to determine osseous healing of hindfoot osteotomies in irregular bones of the foot...
October 13, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
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